Penis: Probe; tool; handle; muscle; shaft; horn; tusk; hook (particularly if bent upwards); prong; post; wrench; dagger; spear; spade; gardenhose; sabre; cutlass(!); truncheon; digger; piston; rod; staff; root; trunk; pillar; bone; appendage; meat; serpent; anaconda (traditionally only for the long ones, because of the syllables); python; wyrm (it means a limbless dragon, but if you're not in a fantasy story, people might mistake it for a worm, and that's just wrong).
Scrotum (difficult)- balls; walnuts; plums; sack; satchel; pouch; cherries; nodes; pair
Vagina: nether lips; chamber; core; flower (and flowerpatch); bud; petals; temple; folds; portal; gates; envelope; purse; silks; entry; furrow; channel; apex; nexus; mound; heath (unless shaven); divide; crevice; forbidden triangle
Clitoris: nub; pearl; pinkie-tip; berry; niblet; clit
My favorite action words- caress... shiver... lick... tease... nip... tickle... glide... pinch... fondle... grasp... curl... twist... shudder... plunder... thrust... seize... gasp... writhe... pant... throb... piston... seethe... rake... scream... clench... tremor... release... embrace... kiss... tangle... shimmy... bliss.
Was it good for you, too?